Sola, A. J. & Ehrlén, J. Vegetative phenology constrains the onset of flowering in the perennial herb Lathyrus vernus.
The results validated with more years and genotypes that the period from 680 to 930°-days after onset of flowering (DDAF) was sensitive to the minimum temperatures.
The onset of flowering occurs earlier under warming and later under cooling in these six species3, which agrees with laboratory research on genetic pathways regulating how the timing of flowering responds to temperature in Arabadopsis thaliana33,34,35,36,37.
These stages correspond to the onset of flowering (anthesis) through milky ripe for the early termination date, and the end of flowering through soft dough for the later date.
A role in development was inferred from modified growth rates in root, rosettes and inflorescences recorded in AhNF-YC overexpressing Arabidopsis plants, in addition to a delayed onset of flowering.
The duration (in days) of each phenological stage was recorded for both cultivars through visual observations at the following times: the onset of bud sprouting, the onset of flowering, the onset of fruit maturation, the beginning of fruit harvest, the end of flowering, and the end of fruit harvest.
KEY RESULTS Temperature and day length both affect onset of flowering.
B. New flush developing before the onset of flowering from the apical regions of the plant.
Arabidopsis adjusts the onset of flowering to the length of winters via an epigenetic mechanism.
In time, he adds, it may even be possible to use plant electronics to speed or delay the onset of flowering to protect them from coming harsh weather.
Using a replicated regression design, seeds of each species were sown in the greenhouse at 5 densities in monoculture and mixed and grown till onset of flowering.
